Consider sunlight incident on a pinhole of width 10^3A. The image of the pinhole seen on a screen shall be

Monjur Alahi

Consider sunlight incident on a pinhole of width 103A. The image of the pinhole seen on a screen shall be

(a) a sharp white ring.

(b) different from a geometrical image.

(c) a diffused central spot, white in colour.

(d) diffused coloured region around a sharp central white spot.


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

(b), (d)

(b) different from a geometrical image.

(d) diffused coloured region around a sharp central white spot.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Consider the following statements: 1. Clouds generally reflects some of the sunlight in different directions and the rest is

The Right option is : (a) 1 and 2 

1 Answers 1 views
Consider sunlight incident on a slit of width 104 A. The image seen through the slit shall (a) be a fine sharp slit white in colour at the center.

(a) be a fine sharp slit white in colour at the center.

1 Answers 1 views
Consider the diffraction patern for a small pinhole. As the size of the hole is increased (a) the size decreases.

(a), (b) (a) the size decreases. (b) the intensity increases.

1 Answers 1 views
A rectangular path of 60m length and 3m width is covered by square tiles of side 25cm. How many tiles will there be in one row along its width?

12, 240, 2880

1 Answers 5 views
A rectangular sheet of paper is of length 1.2m and width 21cm. Find the ratio of width of the paper to its length.

The correct answer is 7 : 40 

1 Answers 1 views
The light of wavelength 600 nm is incident normally on a slit of width 3 mm.

Correct Option (a) 1.2 mm  Explanation: Linear width of central maxima   = 2Dλ/a

1 Answers 1 views
src attribute used with <img> tag stands for (a) screen (b) screen resolution count (c) source

The correct answer is (c) source

1 Answers 1 views
Aero is used as a background screen of a GUI on a computer screen.

False  Aero is a visual desktop experience that provides easy way to access the desktop.

1 Answers 1 views
The sample of an Excel worksheet on the screen can be seen by ………………..

(a) Print preview enables you to view the sample of worksheet before printing it on a paper.

1 Answers 1 views
Name some everyday objects : (a) which reflect all the colours in sunlight (b) which absorb all the colours in sunlight

(a) White Paper  (b) Blackboard

1 Answers 1 views
X